As of 2005, there were 48 permitted grape varieties in Port wine production. The quality and characteristics of each grape varies with the classification of grape varieties making a distinction between "Very good", "Good" and "Average" quality grapes. The six most widely used grapes for Port are Touriga Nacional, Tinta Cao, Tinta Roriz, Tinta Barroca, Touriga Francesa and Tinta Amarela.

Black grapes

Very good

• Bastardo
• Donzelinho Tinto
• Mourisco
• Tinta Cao
• Tinta Francisca
• Tinta Roriz
• Touriga Francesa
• Touriga Nacional

Good

• Cornifesto
• Malvasia Preta
• Mourisco de Semente
• Periquita
• Rufete
• Samarrinho
• Sousao
• Tinta Amarela
• Tinta da Barca
• Tinta Barroca
• Tinta Carvalha
• Touriga Brasileira

Average

• Avarelhao
• Avesso
• Casculho
• Castela
• Coucieira
• Moreto
• Tinta Bairrada
• Tinto Martins

White grapes

Very good

• Donzelinho
• Esgana Cao
• Folgosao
• Gouveio
• Malvasia Fina
• Malvasia Rei
• Rabigato
• Viosinho

Good

• Arinto
• Boal
• Cercial
• Codega
• Malvasia Corada
• Moscatel Galego

Average

• Branco sem Nome
• Fernao Pires
• Malvasia Parda
• Pederna
• Praca
• Touriga Branca

References